Strengthening Mexico-China Relations and U.S. Pressure on 'Triangular Trade': A Geopolitical Risk Analysis

Executive Summary

Mexico and China formalized their deepening ties during Foreign Minister Velasco's September 2026 visit to Beijing, but this move is largely a symbolic response to U.S. pressure over allegations of triangular trade and demands for stricter investment screening. Local data from Mexico indicates that Chinese transshipments account for only 2% of the growth in its exports to the U.S., suggesting that American pressure is based more on political judgment derived from statistical correlation than on empirical evidence. Nevertheless, the most likely scenario, with a 55% probability, is that low-intensity friction will become a constant feature, intertwined with the Sheinbaum administration's amendments to its foreign investment law and the upcoming USMCA review. South Korean companies should focus on managing regulatory risk by strengthening their systems for documenting compliance with rules of origin and securing dual-sourcing supply chains, rather than choosing sides. At the government level, it is necessary to establish channels for continuously monitoring discussions on detailed criteria for the National Commission on Foreign Investments (CNIE) and trends in USMCA renegotiations.

I. Situational Analysis

Strengthening Mexico-China Relations and U.S. Pressure on 'Triangular Trade': A Situational Analysis

1. Background and Developments

The relationship between Mexico and China carries structural tensions under the United States-Mexico-Canada Agreement (USMCA), known as T-MEC in Mexico. The starting point of this tension was in 2024, when BYD and Tesla sought sites for new factories in Mexico and encouraged their Chinese suppliers to establish a presence there as well [2]. As Washington's scrutiny intensified, few of these projects reached completion [2]. This shows that attempts by Chinese capital to enter the U.S. market indirectly through Mexico have been on Washington's radar for several years.

In 2026, the United States imposed new tariffs on countries with which it does not have a trade agreement, including China [7]. Beijing publicly criticized this measure [7]. This tariff friction is the immediate backdrop to the recent developments surrounding Mexico-China relations. From Mexico's perspective, a dual structure has already become entrenched: an absolute dependence on exports to the U.S. alongside a growing dependence on imports from China [9]. It is this combination that has led the U.S. to raise allegations of triangular trade.

Mexico's moves to overhaul its foreign investment screening system are another dimension of this conflict. Article 30 of the current law already provides a basis for the National Commission on Foreign Investments (CNIE) to block acquisitions on national security grounds [11]. The problem has been the lack of detailed criteria and guidelines for applying this provision [11]. The amendments being pursued by the Sheinbaum administration are an attempt to fill this gap, but interpretations in Mexico are divided on whether to view them as a "restriction on China" or a "response to demands for USMCA renegotiation" [11].

2. Current Situation

On September 7, 2026, Mexican Foreign Minister Roberto Velasco met with Chinese Foreign Minister Wang Yi in Beijing [1][4][7]. The two-day visit took place at Wang's invitation, during which Velasco also presided over the opening ceremony of the Mexican Consulate General in Chongqing [4][13]. China's Ministry of Foreign Affairs stated that the visit would serve to "deepen political trust and cooperation between the two countries" and "promote the stable growth" of the bilateral relationship [4]. Velasco, for his part, remarked at the Chongqing consulate's opening that it would "commemorate the friendship between our two countries" and "contribute to strengthening the bilateral relationship and expanding ties with various actors" [13].

During the meeting, Wang Yi stated, "The relationship between China and Mexico does not target any third party, nor should it be subject to the influence of any third party" [1][7]. He added that China supports Mexico in maintaining its independence, safeguarding its sovereignty and security, and opposing external interference [1]. The timing of this statement, coming just after reports of U.S. pressure on Mexico, is itself a message. The South China Morning Post interpreted this as a response "following reports of U.S. pressure" [1].

The Mexican newspaper El Financiero characterized the meeting as an event in which "China rebuked Mexico over tariffs and warned it would not tolerate external interference" [7]. This perspective emphasizes that the visit took place amidst economic friction between the two countries [7].

Meanwhile, on the U.S. side, President Trump was also seen using the trade card as a means to pressure the Federal Reserve. On September 5, Reforma reported that Trump had mentioned trade with countries that have a trade deficit with the U.S., such as Mexico, as a tool to press for a Fed rate cut [15]. This means that tariff policy is being used not only to contain China but also as a tool to pressure domestic monetary policy.

At the same time, an analysis of U.S. Commerce Department and Mexican statistics cited by Expansión shows that the substance of the triangular trade allegations is smaller than the political debate suggests. The share of Mexico's export growth to the U.S. suspected to be Chinese transshipments is only 2% [9]. In contrast, the Peterson Institute for International Economics (PIIE), in its value-added trade flow analysis, assesses that U.S. tariffs on China have "only changed the route by which Chinese content reaches the United States, but have not reduced U.S. dependence on China itself" [5]. The analysis indicates that since the tariffs of the first Trump term, the flow of Chinese goods and services entering the U.S. market embedded in imports from third countries has actually increased [5].

3. Key Actors and Positions

China's Ministry of Foreign Affairshas formalized the principle that its relationship with Mexico will not be subject to third-party—namely, U.S.—interference [1][7]. Wang Yi's statement is less a promise of tangible support for Mexico and more a preemptive check on U.S. pressure. The fact that China uses similar language with Caribbean nations like Trinidad and Tobago [16] suggests this is not a response specific to Mexico but a standardized discourse applied across Latin America.

Mexico's Ministry of Foreign Affairs (Foreign Minister Velasco)has taken steps to substantively expand relations with China through the visit to Beijing and the opening of the consulate in Chongqing [4][13]. However, the Mexican government is simultaneously pursuing legislation to strengthen CNIE screening [11], indicating a dual strategy of expanding ties with China while managing risks with the U.S. For the Sheinbaum administration, the relationship with China is both a bargaining chip and a risk. Given the structure of the Mexican economy, where exports to the U.S. account for an overwhelming share [14], a direct confrontation with Washington is an untenable option.

U.S. Government (USTR, Department of the Treasury, etc.)is applying pressure on two fronts. One is the demand for Mexico to strengthen investment screening based on triangular trade allegations; the other is domestic policy pressure using trade surpluses and deficits as leverage [15]. Actions such as monitoring the implementation of USMCA labor provisions (the Yazaki case) [10] and imposing tariffs [7] show that the U.S. already possesses multiple levers of pressure on Mexico.

Mexican Businesses and Export Sectorare the primary stakeholders in this conflict. An opinion piece in El Financiero points out that while Mexico's trade volume with the U.S. has reached a record high, this conceals "low value-added" [14]. This points to Mexico's structural vulnerability as merely an assembly and transit hub, suggesting that U.S. concerns about triangular trade are not entirely unfounded.

4. Key Issues

The first issue is the statistical interpretation of the actual scale of triangular trade. The 2% analysis by Expansión [9] and the value-added analysis by PIIE [5] differ in their focus. The former focuses on the small share of suspected transshipments in Mexico's export growth to the U.S., while the latter emphasizes that tariffs have only altered the routes of circumvention without reducing fundamental dependence. Both analyses suggest that U.S. concerns about transshipment have limited empirical backing compared to the political rhetoric, but neither denies the existence of such routes.

The second issue is whether Mexico's reform of its investment screening system will function as a genuine check on China. Interpretations within Mexico are divided on whether the CNIE amendment is a measure targeting a specific country or a procedural adjustment to address USMCA renegotiation demands [11]. This ambiguity will be a variable that determines both the intensity of Washington's pressure and the level of Beijing's backlash.

The third issue is the sustainability of the balance Mexico can strike between the U.S. and China. Velasco's visit to Beijing and the opening of the Chongqing consulate [4][13] show an institutional deepening of ties with China, but the Mexican economy's structural dependence on the U.S. [14] fundamentally constrains this balance. Wang Yi's statement that "third-party interference will not be tolerated" [1][7] could be read as a signal that China might respond with more than diplomatic language if this balance is disturbed, but no concrete actions have been confirmed to date.

II. In-Depth Analysis

Strengthening Mexico-China Relations and U.S. Pressure on 'Triangular Trade': An In-Depth Analysis

1. Analysis of Root Causes

The starting point of this conflict is the tariff differential created by the USMCA framework. While the U.S. imposes high tariffs on China, Mexico can access the U.S. market with zero or low tariffs. This asymmetry provides an incentive for Chinese companies to use Mexico as a transit point. The case in 2024, where BYD and Tesla sought sites for new factories in Mexico and encouraged their suppliers to join them, clearly illustrates this incentive structure [2]. Although few projects were completed as Washington's scrutiny intensified, this indicates that U.S. concerns were based on concrete evidence for several years [2].

However, the actual figures diverge from the political rhetoric. According to an analysis by the Mexican media outlet Expansión, only 2% of the growth in Mexico's exports to the U.S. can be attributed to Chinese triangular trade [9]. While it is true that Mexico's exports to the U.S. and imports from China are increasing simultaneously, the conclusion from local data is that this statistical correlation does not necessarily mean transshipment [9]. U.S. pressure is closer to a political judgment based on structural suspicion—that is, statistical correlation—than on proven trade distortion.

PIIE's long-term analysis addresses the essence of this issue from a different angle. It argues that U.S. tariffs on China have largely failed to reduce U.S. dependence on China over the past few years and have instead only changed the routes by which Chinese content reaches the U.S. [5]. An examination of value-added trade flows shows that the decline in U.S. dependence on China is much smaller than bilateral trade statistics suggest [5]. The current pressure on Mexico regarding investment screening can be seen as a belated attempt to contain this structural failure.

2. Structural Context

Politically, the situation is a direct clash between Mexico's foreign policy autonomy and U.S. security interests. The Sheinbaum administration must balance the reality of its trade dependence on the U.S. with the diplomatic rationale of diversifying relations with China. Article 30 of the current foreign investment law already provides a basis for the National Commission on Foreign Investments (CNIE) to block acquisitions on national security grounds [11]. However, the Mexican government itself acknowledges that there have been no detailed criteria or guidelines for its application [11]. Interpretations within Mexico are divided on whether the amendment actually targets China or is a gesture toward the U.S. during the USMCA renegotiation phase [11].

Economically, Mexico's dual-dependence structure is a fundamental constraint. Exports to the U.S. are breaking records, but an opinion piece in El Financiero points out that low value-added is hidden behind these record figures [14]. An export structure centered on assembly and processing is difficult to sustain without imports of Chinese intermediate goods. This leads to a dilemma: if Mexico reduces imports from China as the U.S. demands, its own export competitiveness could be undermined.

In the security context, the backdrop is that U.S.-China competition has already spread throughout Latin America in sectors such as supply chains, telecommunications, and resources. China's tangible investments at the subnational level, such as the subway in Colombia and the Port of Chancay in Peru, have accumulated into irreversible facts on the ground [6]. In contrast, the U.S. relies on policy announcements like telecommunications security warnings and sanctions relief, but actual capital deployment has not kept pace [6]. The case of Mexico illustrates how this parallel competition is being transformed within the institutional framework of the USMCA.

3. Historical Precedents and Comparative Cases

U.S. concerns about third-country circumvention are not a new phenomenon. Since the imposition of tariffs on China during the first Trump administration, Chinese goods and services have increasingly found routes into the U.S. market through third countries [5]. PIIE summarizes this by stating that "tariffs have changed the route rather than reducing dependence" [5]. Similar debates surrounding Canada have been repeated in the same context. Washington's preemptive checks on attempts by BYD and Tesla suppliers to enter Mexico in 2024 also serve as a direct precedent for the current pressure on investment screening [2].

China's response also follows a pattern that is not limited to one region. In Trinidad and Tobago, the Chinese embassy countered U.S. criticism of its technological cooperation, labeling it "political manipulation and interference in sovereignty" [16]. The same rhetoric used by Wang Yi regarding the relationship with Mexico—that it "should not be subject to the influence of any third party"—was also used with this small Caribbean nation [16][1]. This suggests that China has a standardized response language that it applies regardless of region when countering U.S. pressure on individual countries.

The case of South Korea also serves as a point of comparison. Wang Yi's visit to South Korea and his declaration of a "full recovery of ROK-China relations" were assessed not as "a move by China to take the lead in resolving the Korean Peninsula issue, but rather as a suspension of its role as a U.S.-North Korea mediator and a call for the U.S. to change its hostile policy toward North Korea" [3]. In this case as well, the Chinese Foreign Ministry's response "suggested it did not have the will to aggressively expand this phase" [3]. Wang's remarks to Mexico can be read as a similar pattern, being closer to a statement of principled support than an expansion of substantive intervention. China has repeatedly shown a tendency in its bilateral relations to prioritize confirming its position through principled rhetoric rather than taking substantive actions that would provoke the United States.

4. Key Variables Shaping Future Developments

The first variable is how the amendment to Mexico's investment screening law is actually implemented. Depending on how the CNIE designs the detailed criteria, the system could become a mechanism that genuinely blocks Chinese capital or remain merely a symbolic gesture toward the United States [11].

The second variable is the level of U.S. demands in connection with the USMCA renegotiation schedule. The fact that President Trump is also showing signs of using the trade relationship with Mexico as a tool to pressure the Federal Reserve for a rate cut [15] indicates that the pressure on China is intertwined with domestic political and monetary policy calculations, rather than being based on pure security logic. In this case, the intensity of demands on Mexico is likely to fluctuate according to the U.S. domestic political calendar.

The third variable is the accumulation of empirical data on triangular trade. If the local analysis showing that the confirmed share of transshipments is only 2% holds [9], U.S. pressure will continue to face criticism that it relies more on political signaling than on empirical evidence. Conversely, if this share rises significantly in future statistics, U.S. demands for investment screening will gain substantive legitimacy.

The fourth variable is the implementation record of the USMCA's labor provisions. The recent successful resolution of the Rapid Response Labor Mechanism (RRM) issue at the Yazaki Group's Guanajuato plant [10] shows that the U.S. has numerous tools to manage Mexico through specific mechanisms within the agreement, beyond tariff and investment pressure. The existence of these multi-layered pressure tactics acts as a practical ceiling on how far Mexico can expand its relationship with China.